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February 2016: from post by iRacing staff David T Wheel Nm collected from David's load cell setup
David notes a 0.5 Nm bias depending on how you run the test.
Also notes reports that Nm will vary by up to a full Nm.
As explained: "it is really hard to pin down the 'peak' force a wheel can output".

David retested all his 'desktop' wheels and logged everything into a spreadsheet.
File: Log summary zipped.
David charted and plotted them on two graphs (below).
As noted by David:

The TX stands out quite nicely in the list, it falls squarely between the G27 and the CSW V2,
I think this would be a nice wheel to get if you sprung for the better quality hardware, and it is a great beginner wheel.
I still wonder how it really compares to a T500, someday I will get my hands on one again.
Just to be clear the data below is a plot of actual torque from the wheel as measured with my load cell setup,
it is not a stepX plot test. I'm confident that the numbers are accurate to within 20%, or close enough to compare.